<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <!-- 提示区域 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        :closable="false"
        show-icon
      >
      </el-alert>
      <!-- 步骤条 -->
      <!-- 将一个是数字的字符串转换为数字可以直接-0 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        align-center
        finish-status="success"
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- tabs标签 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRulesRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="tabPosition"
          :before-leave="beforeTableave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称：" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格：" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量：" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量：" prop="goods_number" type="number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类：" prop="goods_cat" type="number">
              <!-- 选择商品级联选择 -->
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                expand-trigger="hover"
                :props="catProps"
                @change="handleChange"
              >
              </el-cascader>
            </el-form-item>
          </el-tab-pane>

          <el-tab-pane label="商品参数" name="1">
            <!-- 渲染表单的item项 -->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <!-- 复选框 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action表示图片要上传到的后台api地址，接口
              on-preview预览事件  handleRemove删除图片事件
               list-type="picture"指定当前预览组件的呈现方式
                on-success上传成功后的钩子函数
               -->
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary" class="btmaaa">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="btnAdd" @click="addGoods">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览弹框 -->
    <el-dialog
      title="图片预览"
      :visible.sync="prevWdialogVisible"
      width="50%"
    >
        <img :src="previewPath" alt="" class="previewImg">
    </el-dialog>
  </div>
</template>
<script>
import _ from 'lodash'
export default {
  data() {
    return {
      // 步骤条索引从第几个开始
      activeIndex: "0",
      // tabs标签方 向
      tabPosition: "left",
      //添加表单的数据对象
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: [],
        // 图片数组
        pics: [],
        //商品描述详情
        goods_introduce:'',
        attrs:[],
      },
      // 商品分类获取
      catelist: [],
      catProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      //动态参数列表
      manyTableData: [],
      //静态参数列表
      onlyTableData: [],
      //上传图片的url地址
      uploadURL: "http://127.0.0.1:8888/api/private/v1/upload",
      //图片上传路径的请求头
      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      //预览的图片
      previewPath: "",
      //预览窗口弹窗的显示与隐藏
      prevWdialogVisible:false,
      //添加表单数据的验证规则对象
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品数量", trigger: "blur" },
        ],
      },
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    //获取所有商品分类数据
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品数据失败！");
      }
      this.catelist = res.data;
      console.log(res.data);
    },
    // 级联选择器选中项变化,会触发这个函数
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    beforeTableave(activeName, oldActiveName) {
      if (oldActiveName == "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请选择商品分类！");
        return false;
      }
    },
    // 切换tab栏的动态属性判断事件
    async tabClicked() {
      //证明访问的是动态参数面板
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数列表失败！");
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTableData = res.data;
        console.log(res.data, "wwwwwwwwwwwwwwww");
      } else if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取静态参数列表失败！");
        }
        console.log(res.data);
        // res.data.forEach(item=>{
        //     item.attr_vals=item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        // })
        this.onlyTableData = res.data;
      }
    },
    // 处理图片预览效果
    handlePreview(file) {
      console.log(file);
      this.previewPath = file.response.data.url;
      //显示预览照片弹窗
      this.prevWdialogVisible=true;
    },
    //移除(删除)图片操作
    handleRemove(file) {
      console.log(file);
      // 1.获取图片要删除的临时路径
      const filePath = file.response.data.tmp_path;
      // 2.从pics数组中，找到这个图片对应的索引值
      const i = this.addForm.pics.findIndex((x) => x.pice === filePath);
      // 3.调用数组的splice方法，把图片信息对象，从pices数组中移除
      this.addForm.pics.splice(i, 1);
      console.log(this.addForm);
    },
    // 监听图片上传成功事件
    handleSuccess(response) {
      // 1.拼接得到一个图片信息对象 临时路径
      const picInfo = { pic: response.data.tmp_path };
      // 2.将图片信息对象，push到pics数组中
      this.addForm.pics.push(picInfo);
      console.log(this.addForm);
    },
    //添加商品分类
    addGoods(){
        this.$refs.addFormRulesRef.validate(async valid=>{
            if(!valid){
                return this.$message.error('请填写必要的表单！')
            }
            //执行添加的业务逻辑,
            //lodash _深拷贝
            const form =_.cloneDeep(this.addForm)
            form.goods_cat=form.goods_cat.join(',');
            //处理动态参数
            this.manyTableData.forEach(item=>{
                const newInfo={
                   attr_id:item.attr_id,
                   attr_vals:item.attr_vals.join('')
                }
                 this.addForm.attrs.push(newInfo)
            })
            //处理静态属性
              this.onlyTableData.forEach(item=>{
                const newInfo={
                   attr_id:item.attr_id,
                   attr_vals:item.attr_vals
                }
                 this.addForm.attrs.push(newInfo)
            })
            form.attrs=this.addForm.attrs;
            console.log(form);
            //发起请求添加商品
            //商品的名称必须是唯一的
            const {data:res} =await this.$http.post('goods',form)
            if(res.meta.status!==201){
                return this.$message.error('添加商品失败！')
            }
                // this.$message.success('添加商品成功！');
                this.$router.push('/goods')
        })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>

<style lang="less" scoped>
.previewImg{
    width: 100%;
}
.btmaaa{
    margin: 15px 0px;
}
.quill-editor{
    margin: 15px 0px;
    
}
</style>